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pumps

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  1. yellowvanman

    UFH and other heating

    Got to wire up the heating system in a house later this week and its not totally straightforward: UnderFloorHeating on ground floor - 6 zones, radiators on 1st and 2nd floor, hot water cylinder and a set of towel rails, all of which need to be on different timers (4). Problem is when joining...
  2. cliffed

    submersible pumps

    jus a quickie before i go golfing guys,looked at a water pump system the other day,consists offa ,sumersible pump & 2 x 3 phase pumps,wots the regs on these concerning the location their installed in,ie water contact,do they need rcds .No real literature with system,any ideas cheers speak later...
  3. L

    PooL Heat pumps: Single or 3 phase?

    I'm shopping for a pool heat pump. It seems reviews suggest that single phase pumps should not be rated above 10KW output for fear of shorting out[yet they sell them up to 31KW models?]. 3 phase models seem safer, yet their installation is more expensive since you need a 1 to 3 phase converter...
  4. johnboy6083

    swimming at work.

    last night, i had a phonecall from an engineer at work. "John can you and your mate go and take a look at a pump thats failed?" off we go. The pumps are sat in an underground plant room, that has no roof yet. first thing i do (after isolating, and locking off) is disconnect the couplings from...
  5. M

    three phase energy saving moudules pumps etc

    hi everyone we have a three phase supply (63 amp hrc fuses) which feeds a star delta motor control panel with interlocking door panel switch contactor. This is operated via a bms (building management system) , boiler control system and the energy saving system is wired in after the delta...
  6. R

    Anyone know about fish pumps? Submerged 230v??

    After inadvertently drilling a hole in my pond, rescuing one fish from the jaws of death and literally bringing the other back to life, I now have an aquarium. (No this is not a prank call originating from a Durham area code). The issue I have is that pump we got with it isn't a plug-in...
  7. J

    S Plan, 2 Houses, 2 Pumps, 2 Programmable Controllers, 1 Shared Gas Boiler

    S Plan, 2 Houses, 2 Pumps, 2 Programmable Controllers, 1 Shared Gas Boiler Is this possible? Do you just wire up the boiler as per the S-Plan Wiring Diagram, and wire the boiler switched live from both...
  8. lurch

    air source heat pumps

    Hi all Been a while since I have posted, so here goes. I hace a Ecodan Air source heat pump to wire up. I have had no experience with these until now. However, although the wiring diagram is fairly stright forward, it does not accomadate the danfoss wiring centre for the underfloor heating...
  9. T

    Please Help - 3 water pumps running in parallel

    Hey Guys I am based in China and have 3 identical 60 meter 220v 1500 w water pumps supplying water up a hill of height about 120 meters and distance about 260 meters. They are currently connected in parallel but the problem is that they are all running at different speeds hence the water is not...
  10. S

    Heating System

    Hi there, I,ve just joined this site in the hope I can get some help with a job that I,m doing. Its a standard fully pumped heating system, three zones (one for hot water, one downstairs heating and one upstairs heating) All controlled by a three channel timeclock. The hot water is controlled by...
  11. V

    heating control pumps

    I have been trying all last week to try to get two pumps to work together as well as work indepently of each othe Ill explain. I have a three channel time clock HW,CH1 and CH2 I have a oil fired burner and two pumps.When I call for CH1 or CH2 I want the two pumps to run when I call for hot...

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